2025-02-14
- Type: multi-die, domeless
- Bin: unknown
- Color group: unknown (4000 K)
- CRI: 95
- Rated voltage: 6 V
- Max. Forward current: 7,200 mA
- Max. Peak current: — mA
- Viewing angle: — °
- Thermal resistance: — K/W
- Max. Temperature Tj: max. —°C
An official data sheet is not available. The above information was taken from the Fireflylite product description. No further information is available and the manufacturer is unknown.
The emitter tested here was made available to me by BLF user @thefreeman. Many thanks for this at this point.
At first glance, the FFL707A is reminiscent of an XHP70.3 HI. The biggest difference is the yellow surface, which is completely covered in phosphor. It therefore looks like a multi-die version of the FFL351A.
The four LED chips are separated by a small gap, which could have an effect on the light image.
The footprint is virtually identical to that of the XHP70.3 HI. The LED connections are wired differently using a corresponding LED board in order to achieve a forward voltage of 12 V. In this test, the FFL707A is tested in the 6 V configuration.
The four LED chips emit light to the side, with the surface of the chips having a higher color temperature than the lateral emission. The target color temperature is thus achieved by mixing the two areas.
The illuminated area is 25.8 mm2 in size. However, due to the light emitted from the sides and the gaps between the individual LED chips, it is almost impossible to determine the exact illuminated area. In this respect too, the FFL707A is pretty much the same as the XHP70.3 HI.
- at 7,200 mA (official maximum current): 3764 lm @ 6.64 V
- Power at official maximum: 47.8 W
- Efficiency at 7,200 mA: 78.7 lm/W
- Maximum reached at 15.2 A, at this point 5254 lm @ 7.63 V
- Power at maximum 116 W
- Efficiency at maximum 45.3 lm/W
Data for 25 °C Tsp (at 85 °C the luminance values are around 13 % lower).
Compared to the XHP70.3 HI, the performance of the FFL707A is lower. The Vf is also significantly higher. This is presumably due to the LED chips and the manufacturing quality. Nevertheless, it offers a performance commensurate with the color rendering and CCT.
The maximum is reached at around 15 A, while the XHP70.3 HI easily achieves 20 A. To achieve a good balance between efficiency and performance, the FFL707A should be supplied with a maximum current of around 9 A. Beyond this, the increase in luminous flux is marginal.
The SFT-70 does not reach the maximum current of the FFL707A by a long way, which is partly due to the smaller footprint (5050) and partly due to the thermal resistance of the LED chips.
The difference in luminance between the two LEDs more or less corresponds to the difference in luminous flux due to the virtually identical illuminated area and beam characteristics compared to the XHP70.3 HI. This LED is less suitable for longer ranges, and if it is, then only with very large reflectors. The advantage here, however, is a wide corona around the spot, which also makes it suitable for use at close range with large reflectors.
Here the beam is shown in a Sofirn IF23 Pro with OP reflector.
The gaps between the LED chips create a donut hole. Depending on the reflector, this is more or less pronounced. SMO reflectors should not be used with this LED. Otherwise there are no color fringes or other artifacts.
If an absolutely harmonious light pattern is required, a diffuser is needed in front of the reflector.
My sample tested here is incredibly rosy. The duv of -0.016 (!) is the lowest I have ever measured. According to Fireflylite, the FFL707A should have a duv of max. -0.001 ("-0.0007 to -0.001 ”). The red component is extremely high, with a peak at around 630 nm.
It should be noted that the duv can fluctuate when using optics. The spectrum was measured without secondary optics. The LED tested here was installed in the IF23 Pro as a test. In this condition, the tint corresponded approximately to that of a 219BT-V1 sw45k.
The high proportion of red distorts the colors enormously, especially in nature. Brown-red tones stand out extremely, while blue and especially green are reproduced incorrectly, especially in comparison to other high CRI LEDs.
The high proportion of red has an impact on CRI and R9. The specified CRI of 95 was massively missed and the R9 is also lower than would be expected. The CCT was maintained. With FFL LEDs you generally have to be aware that they can be very rosy in some cases and that there is above all a series variation.
- Ra: 89
- R9: 49
- CCT: 4277 K
- duv: -0.0160
The FFL707A is a very special LED and, despite the standard footprint, not for everyone. The tint (in my sample) is extremely rosy, which significantly reduces the color rendering, and the light image has a donut hole depending on the optics used, although there are no color fringes. On the other hand, it is fully compatible with the 7070 footprint and offers guaranteed color localization under BBL.
Please note that this LED is only available as a 6/12 V LED, 3 V versions are not available!
Thank you for reading this test. 
